Improvement in machines foe polishing wood



HENRY O. HO'OPER, vOF DIAMOND SPRINGS, CALIFORNIA.`

Letters .Patent-No. 78,093, dated .May 19, 1868.

IMPItOVElllIENI IN MACHINES EUR POLISHING WOOD.

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Bc it known that I, HENRY OfHOOPEit, ofDi-.nnond Springs, in the county of El Dorado, and State of- Calitornia, have invented `anew and improved Machine for Polishing Doors and other Articles of Wood having plane surfaces, and that the followingdescription, taken in connection'with the accompanying drawings, hereinafter referred to, forms a full and exact specification of the saine, wherein I have set`forththc nature and principles of my said improvements, by which my invention may be distinguished from all others ot" a similar class,together with such parts as I- claim, and desire to have'secured to me by Lettcrslatcnt.

This invention relates to a new and improved machine for polishing or smoothing doors and other articles i constructed of wood and having plane surfaces.

The invention consists of one or more pairs of rotary polishing-plates, operating in vertical planes, in con nection with one or more pairs of reciprocating polishing-plates and a feed-mechanism, all arranged 'as-hereinafter fully' shown and described.

In the accompanying sheet of drawings- Figure 1 is a sideview of my invention.

Figure 2, 'a plan or top'view oi'` the same.

Sinilar letters of reference indicate like parts.

A represents the'base, on which the frame of the machine restsr said frame being composed of two longitudinal parts, B B', one part, B, being fixed or stationary, and the thcr part, B', adjustable or movable, it being fitted on dove-tail gnidesa a, and moved or adjusted by screws C. i

In'each part B B of the framing there are fitted two horizontal shafts, D D, havingcircular plates, E, o n their inner ends. Y The shafts in thepart are allowed to slide in their bearings, 11, and have springs, c, acting 4'against them, which have a tendency to keep. the plates E of said part of the framing from the plates of the other part, the plates ofthe two parts being arranged in pairs, as Will be understood by referringto iig. 2. These plates may be adjusted as near together as desired by screws F,Vwh'ich bear against the outertcnds of the shafts. i 'i The plates E are rotated, by belts d, from a driving-shaft, G; and these plates have a smoothing or polishingsurface giventheir face-sides bycovering the same with glue and sand, or other equivalent materials.

H H are two vertical reciprocating polishing or smoothing-plates, fitted between suitable guides, e, attached to thetwo parts B B of -the frame. These plates are operated from the driving-shaft G, the latter having two eccentricsgifjinpon it, placed in reverse o r opposite positions, and working within yokes I I, at the lower ends ot" the plates H H, as shown by the dotted l-ines in fig. 1;

J represent feed-rollers, which are placed in a vertical position at the inner sides of the two parts B'B' of the framing'. i These feed-rollers are at the front part of the framing, Itwo pairs being represented, and they are operated by screws g on shafts h, gearing into worm-.wheels z' on their ends, the shafts It being rotated by bevel-gears 7' from shafts k, which receive their motion from the shafts D of the front pair offpolishing-platcs E by belts ZL K represents vertical friction-rollers at the discharge-end of the framing, and L" represents horizontal friction rollersat the bottom of the framing. f Y

"The operation is as follows: The part Bf of the framingis adjusted nearer to or farther from the part B, to suit the thickness of the stuff or article to be operated upon. The driving-shaft G is operated by any con- -ve'nient power, and the article to be voperated upon,` which, in this instance, is a door, M, as shown in l, is placed between the first pair of feed-rollers J', which shove it along between the first pair of circular rotating plates E, thc second pair of feed-rollers then acting upon the-door, and assisting in the feed-movement, the door then passing between the second pair et' plates E-,iandbetween the reciprocating polishing-plates H H.

Both sides ofthe-door are polished simultaneously, the rollers K L serving to diminish friction in the feed-4- ing of the door or other article through the machine.

It will, of course, be understood that the reciprocatingpolishing-plates H H are provided with polishingfaces like the rotary plates E E.' t i Having'thusdescribed my invention, I' claim as new, and desire to secure by Letters Patent- The circular rotary polishing-plates E-and the reciprocating polishing-plates H, arranged with and attached to the adjustable framing B,all constructed to perate as described, for the purpose specified.

' i H. O. HOOPER. Witnesses:

M. Gr. GRIFFITH, J. AB. HUME. 

